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Prone to problems and solutions in the process of making ventilation ducts
- Categories:Industry
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- Time of issue:2021-08-27
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(Summary description)Phenomenon: The surface of the sheet is uneven, the thickness is uneven, there are significant indentations, cracks, blisters, scars and rust, etc.; the air duct plane sinks, the sides protrude outward, and there is significant deformation.
Prone to problems and solutions in the process of making ventilation ducts
(Summary description)Phenomenon: The surface of the sheet is uneven, the thickness is uneven, there are significant indentations, cracks, blisters, scars and rust, etc.; the air duct plane sinks, the sides protrude outward, and there is significant deformation.
- Categories:Industry
- Author:
- Origin:
- Time of issue:2021-08-27
- Views:0
(1) Phenomenon: The surface of the sheet is uneven, the thickness is uneven, there are significant indentations, cracks, blisters, scars and rust, etc.; the air duct plane sinks, the sides protrude outward, and there is significant deformation.
(2) Harmfulness: When the system is running, the air duct leaks, causing undue air-conditioning load loss and affecting the service life of the air duct; the surface of the air duct trembles and produces noise.
(3) Reason analysis: Before making the air duct, the quality of the materials used was not checked; the thickness of the steel plate was not measured.
(4) Prevention measures: first check the material factory certificate and material quality verification, and then check the appearance of the material; measure the thickness of the steel plate.
Air pipe warped angle, twist and elbow angle are incorrect
(1) Phenomenon: The two opposite planes of the rectangular duct are not parallel, and the two ends are not parallel; the corners are not straight; the diagonals are not equal; the bite is not strict.
(2) Harmfulness: it will make the air pipe connection load unevenly, the air pipe after installation is not straight, the flange gasket is not tight, the system leaks, causing the air conditioning load loss, and shorten the service life; affect the air pipe, The installation position of the tuyere is correct.
(3) Reason analysis: the blanking of the plate is not set out correctly; the air ducts are parallel in pairs, and the length and width of the opposite sides of the plate are not equal; the width of the bite at the four corners of the wind pipe is not equal; the setting of the bite seam is wrong, manual The force of the bite seam is not the same; no corresponding reinforcement measures have been taken.
(4) Preventive measures: When unfolding the blanking, the blanks should be squared strictly, and the length, width and diagonal of each blank should be checked and repaired, so that their deviations are controlled within the permitted range; the blanks after blanking , The two sheets on the opposite side of the air duct should be superimposed to check the correctness of the size; the reserved size of the sheet bite must be accurate to ensure that the bite width is consistent; the bite is sewn at the four corners, and the bite is closed manually When sewing, use a wooden hammer to tighten the center of the two ends of the bite first, and then evenly tighten it along the entire length; implement the relevant delimitation of the national standard "Code for Construction and Acceptance of Ventilation and Air-Conditioning Engineering".
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